EP 0182872 B1 19891108 - A PROCESS FOR THE PREPARATION OF CYCLOBUTENE-SUBSTITUTED AROMATIC HYDROCARBONS
Title (en)
A PROCESS FOR THE PREPARATION OF CYCLOBUTENE-SUBSTITUTED AROMATIC HYDROCARBONS
Publication
Application
Priority
US 61216484 A 19840521
Abstract (en)
[origin: WO8505355A1] Process for the preparation of an aromatic hydrocarbon with a cyclobutene ring fused to the aromatic hydrocarbon which comprises, dissolving an ortho-alkyl halomethyl aromatic hydrocarbon in an inert solvent and pyrolyzing the solution of ortho-alkyl halomethyl aromatic hydrocarbon in the inert solvent under conditions such that the ortho-alkyl and the halomethyl substituents form a cyclobutene ring thereby forming an aromatic hydrocarbon having a fused cyclobutene ring. The ortho-alkyl group has the structural formula (R')2-CH-, wherein R' is separately in each occurance hydrogen or a C1-20 alkyl. The aromatic hydrocarbons with a cyclobutene ring fused to the aromatic hydrocarbon are useful in the preparation of monomers, which are then useful in the preparation of high performance polymers.
IPC 1-7
IPC 8 full level
C07C 43/21 (2006.01); C07B 31/00 (2006.01); C07B 37/10 (2006.01); C07C 1/00 (2006.01); C07C 1/26 (2006.01); C07C 13/44 (2006.01); C07C 17/00 (2006.01); C07C 17/25 (2006.01); C07C 25/18 (2006.01); C07C 27/00 (2006.01); C07C 37/00 (2006.01); C07C 39/17 (2006.01); C07C 41/00 (2006.01); C07C 41/24 (2006.01); C07C 51/00 (2006.01); C07C 51/347 (2006.01); C07C 63/34 (2006.01); C07C 67/00 (2006.01); C07C 67/28 (2006.01); C07C 67/30 (2006.01); C07C 69/035 (2006.01); C07C 69/76 (2006.01); C07C 201/00 (2006.01); C07C 231/00 (2006.01); C07C 231/12 (2006.01); C07C 233/65 (2006.01); C07C 253/00 (2006.01)
CPC (source: EP US)
C07C 69/76 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
WO 8505355 A1 19851205; AU 4400285 A 19851213; AU 568021 B2 19871210; CA 1231961 A 19880126; DE 3574129 D1 19891214; EP 0182872 A1 19860604; EP 0182872 A4 19860821; EP 0182872 B1 19891108; ES 543306 A0 19870116; ES 8702872 A1 19870116; JP S61500792 A 19860424; JP S644493 B2 19890125; US 4570011 A 19860211
DOCDB simple family (application)
US 8500939 W 19850520; AU 4400285 A 19850520; CA 481777 A 19850517; DE 3574129 T 19850520; EP 85902848 A 19850520; ES 543306 A 19850520; JP 50240185 A 19850520; US 61216484 A 19840521